IB Sports, Health, and Exercise Science
Paper 1 Review 2025 Questions and
Answers
mechanisms of glucose uptake - ANSWER✔✔-1. insulin dependent uptake (most
common at rest)
2. exercise induced uptake (without insulin
explain insulin dependent glucose uptake process - ANSWER✔✔-eating-->glucose
levels rise-->pancreas makes insulin-->binds to muscle/tissue-->activates PL3K--
>GLUT4 moves into cell-->cell lets glucose enter-->glucose used as energy/stored as
glycogen
explain exercise induced glucose uptake process - ANSWER✔✔-muscle contracts --
>calcium releases and activates AMPK-->glucose moves into cell-->glucose enters
without insulin
what is insulin - ANSWER✔✔-converts glucose into glycogen (stored glucose)
-tells body were full
, what is AMPK - ANSWER✔✔-activated by exercise, allows glucose uptake without
insulin (maintains energy balance)
muscle contraction types - ANSWER✔✔-1. isotonic
2. isometric
3. isokinetic
isotonic contractions - ANSWER✔✔-involve movement and change in muscle length
types of isotonic contractions - ANSWER✔✔-1. concentric - shortens/produces force
e.x. bicep curl
2. eccentric - lengthens/produces force
e.x. downward movement of bicep curl
isometric - ANSWER✔✔-no change in length/ produces force
e.x. plank
isokinetic - ANSWER✔✔-change in length at constant speed
e.x. rehab machines
interoceptors - ANSWER✔✔-detect internal stimuli
baroreceptors - ANSWER✔✔-maintain blood pressure during activity
Paper 1 Review 2025 Questions and
Answers
mechanisms of glucose uptake - ANSWER✔✔-1. insulin dependent uptake (most
common at rest)
2. exercise induced uptake (without insulin
explain insulin dependent glucose uptake process - ANSWER✔✔-eating-->glucose
levels rise-->pancreas makes insulin-->binds to muscle/tissue-->activates PL3K--
>GLUT4 moves into cell-->cell lets glucose enter-->glucose used as energy/stored as
glycogen
explain exercise induced glucose uptake process - ANSWER✔✔-muscle contracts --
>calcium releases and activates AMPK-->glucose moves into cell-->glucose enters
without insulin
what is insulin - ANSWER✔✔-converts glucose into glycogen (stored glucose)
-tells body were full
, what is AMPK - ANSWER✔✔-activated by exercise, allows glucose uptake without
insulin (maintains energy balance)
muscle contraction types - ANSWER✔✔-1. isotonic
2. isometric
3. isokinetic
isotonic contractions - ANSWER✔✔-involve movement and change in muscle length
types of isotonic contractions - ANSWER✔✔-1. concentric - shortens/produces force
e.x. bicep curl
2. eccentric - lengthens/produces force
e.x. downward movement of bicep curl
isometric - ANSWER✔✔-no change in length/ produces force
e.x. plank
isokinetic - ANSWER✔✔-change in length at constant speed
e.x. rehab machines
interoceptors - ANSWER✔✔-detect internal stimuli
baroreceptors - ANSWER✔✔-maintain blood pressure during activity
